Podcast
Questions and Answers
What is the primary reason for pyroclastic surges being more deadly than pyroclastic flows?
What is the primary reason for pyroclastic surges being more deadly than pyroclastic flows?
- The superheated ash ejected from the volcano
- The size and weight of the solid fragments
- The poisonous gases contained in the pyroclastic clouds (correct)
- The speed at which pyroclastic surges travel
What is the main difference between pyroclastic flows and tephra?
What is the main difference between pyroclastic flows and tephra?
- Composition of poisonous gases
- Speed of travel away from the volcano
- Distance traveled from the eruption site
- Size of solid fragments ejected (correct)
Why is tephra often referred to as blocks or bombs?
Why is tephra often referred to as blocks or bombs?
- Because they are propelled from the volcano at high speeds (correct)
- Due to their explosive nature
- Based on their aerodynamic shape
- For their resemblance to explosive devices
What potential hazard, apart from destruction of vegetation, is associated with tephra?
What potential hazard, apart from destruction of vegetation, is associated with tephra?
What characteristic makes tephra extremely destructive to individuals and property?
What characteristic makes tephra extremely destructive to individuals and property?
Which volcanic eruption resulted in the loss of food supplies for thousands due to tephra destruction?
Which volcanic eruption resulted in the loss of food supplies for thousands due to tephra destruction?
Why are pyroclastic surges more deadly than pyroclastic flows despite having equal temperatures?
Why are pyroclastic surges more deadly than pyroclastic flows despite having equal temperatures?
What characteristic differentiates tephra from pyroclastic flows in terms of speed?
What characteristic differentiates tephra from pyroclastic flows in terms of speed?
What danger is posed by the thick layers of ash associated with tephra?
What danger is posed by the thick layers of ash associated with tephra?
What is the primary difference between pyroclastic flows and pyroclastic surges?
What is the primary difference between pyroclastic flows and pyroclastic surges?
Why are pyroclastic clouds considered dangerous to living organisms?
Why are pyroclastic clouds considered dangerous to living organisms?
What makes tephra different from pyroclastic flows?
What makes tephra different from pyroclastic flows?
How do tephra cause destruction to individuals and property?
How do tephra cause destruction to individuals and property?
What is a common feature of tephra that makes them hazardous to individuals?
What is a common feature of tephra that makes them hazardous to individuals?
Why are pyroclastic surges more likely to result in human casualties?
Why are pyroclastic surges more likely to result in human casualties?
Which hazard is NOT mentioned as a consequence of tephra eruptions?
Which hazard is NOT mentioned as a consequence of tephra eruptions?
What distinguishes pyroclastic surges from pyroclastic clouds?
What distinguishes pyroclastic surges from pyroclastic clouds?
What is a significant characteristic of tephra that contributes to their destructive potential?
What is a significant characteristic of tephra that contributes to their destructive potential?
What is a key reason tephra is considered dangerous during volcanic eruptions?
What is a key reason tephra is considered dangerous during volcanic eruptions?
